Objective To study the effect of Bortezomib on proliferation, apoptosis, cell cycles and activation of NF-?B of non-small cell lung cancer cells (NSCLC) in vitro. Methods The inhibitory action of Bortezomib on cellular growth was determined by MTT. The effects of Bortezomib on cell cycle and apoptosis were assessed by flow cytometry. The influence of Bortezomib on the expressions of NF-?B, I?B and Bcl-2 were detected with Western blotting. Results The inhibitory effects of Bortezomib on the proliferation of NSCLC cells showed a time-and concentration-dependent manner. The growth of NSCLC cells was arrested at G2/M stage after treatment with Bortesomib at 25nmol/L for 48h. Basal expression of NF-?B was found to exist in all the 6 cell lines, with NF-?B expression in nucleus showing an inverse correlation with I?B expression in cytoplasm. Bortezomib threw no significant influence on the basal expression of NF-?B, but significantly blocked the TNF-?-induced nuclear translocation of NF-?B and down-regulated the expression of anti-apoptosis protein Bcl-2 in a time-and concentration-dependent manner. Conclusion With NF-?B-dependent pathway, Bortezomib may inhibit the proliferation of NSCLC cells and induce apoptosis.

Objective To explore how to improve the capability of emergency rescue to cope with the explosion of hazardous chemicals through analyzing the rescue process of Tianjin port 8 · 12 explosion hazard.Methods The process of explosion emergency rescue on the hazardous chemicals warehouse of Ruihai company in Tianjin Port on the evening of August 12,2015,were analyzed,summarize the experience and lessons.Results There were some shortcomings on field assessment,safety zoning,EMSS,treatment in hospital,personal protection equipment and public knowledge on hazardous chemicals explosion in Tianjin port 8.12 explosion hazard.we should learn from the lessons,to provide reference for the future similar rescue.Conclusions The ability of emergency rescue team to deal with the major hazardous chemicals explosion should further improve,to protect the safety of society and health of common people.

Objective To investigate the influence of prepubertal exposure to estradiol benzoate (EB)in the male reproductive system of the rats and the natural process of tissue repair,and to clarify the possible mechanism of the reproductive toxicity of exogenous estrogen.Methods Ninety 2 1-day-old male Wistar rats were randomly divided into 2 experimental groups (low dose of EB group and high dose of EB group,n=30)and control group (n=30). The rats in the experimental groups were injected with EB dissolved in peanut oil at 15(low dose of EB group)and 15 000μg·kg-1 (high dose of EB group)respectively,the rats in control group received equal vehicle injection only,once every other day for two weeks from postnatal day(PND)21 to 34.All of them were normally fed after the drug usage was stopped.The testes were harvested at the stages of PND 60 and PND 125(n=15 at each stage).The serum levels testosterone of (T),follicle-stimulating hormone(FSH),luteinizing hormone(LH),prolactin (PRL)and estradiol(E2)of the rats in various groups were detected with radioimmunology method and the weights of the rats in various groups were recorded;the histological changes of the testes tissue were observed with light microscope.Results On PND60,compared with control group,the T levels in low dose of EB group and high dose of EB group were decreased(P<0.05 or P<0.01);the FSH,LH and E2 levels were increased (P<0.05 or P<0.01),and the PRL levels had no change(P>0.05);the weights of testes were decreased(P<0.01);the histological changes of the testes of the rats in experimental groups included seminiferous tubules maldevelopment, decreased cell number of seminiferous epithelia.Compared with low dose of EB group,the T and FSH levels in high dose of EB group were decreased (P<0.05 or P<0.01),the E2 and LH levels were increased(P<0.01),the PRL level had no change (P>0.05 ), and the weight of testes was decreased (P<0.01 );the diameters of seminiferous tubules were smaller,there was no sperm in high dose of EB group while there were a few sperms in low dose of EB group.On PND125,compared with control group,the T,FSH and PRL levels in low dose of EB group and high dose of EB group were decreased(P<0.01),the E2 levels were increased (P<0.01);the LH level in low dose of EB group was increased(P<0.05),the LH level in high dose of EB group was decreased(P<0.01), and the weights of testes in high dose of EB group were decreased(P<0.01);the diameters of seminiferous tubules and the cell number of seminiferous epithelia were increased but not apparent change.Compared with low dose of EB group,the T,LH levels in high dose of EB group were decreased (P<0.01),the E2 and FSH levels were increased(P<0.01),the PRL level had no change(P>0.05),and the weight of testes was decreased(P<0.01);there was still no sperm in high dose of EB group, the number of sperms was increased in low dose of EB group, but it was still lower than that in control group.Conclusion EB is harmful to the reproductive system and can change the normal serum sex hormone levels,even induces the irreversible injury.

Objective To explore the effect of shRNA silenced aromatic hydrocarbon receptor (AHR) on WNT signaling path-way during the differentiation of P19 cells into cardiac myocytes. Methods The eukaryotic expression vector of mouse AHR gene was designed and constructed. The interference plasmid was transfected into P19 cell and the positive stains to AHR gene silencing were screened by G418. The mRNA expression of important genes GSK3βandβ-catenin were evaluated by real-time fluorescent quantita-tive PCR during the differentiation of P19 cells. Results The constructed AHR-shRNA plasmid significantly inhibited the expression of AHR gene. Along with the differentiation of P19 cell into cardiac myocytes, in the interference group the expression ofβ-catenin gene was lower whereas the expression of GSK3βgene was elevated than those of control group with significant differences (all P<0.01). Conclusions The interference of AHR gene expression can regulate WNT signaling pathway in the development of heart.

Objective To investigate the effect of umbilical cord blood monocytes(UCBMC) transplantation in neonatal rats with hypoxic-ischemic brain damage (HIBD) on rat astrocyte proliferation and its correlation with bone morphogenetic protein(BMP) 4.Methods Forty 7-day-old SD rats with the random number table,were divided into normal control(CON) group,hypoxic-ischemic(HI) group,normal(N) + UCBMC group,HI + UCBMC group,10 rats in each group.HIBD model was prepared according to the Rice method.Twenty-four hours after hypoxia,the UCBMC group and HI + UCBMC group were injected with 3 × 106 UCBMC via the lateral ventricle.Seven days after transplantation,changes in the number of neurons were observed by Nissl staining;the expression of glial fibrillary acidic protein (GFAP) was observed by Western blot;the astrocyte proliferation was observed by proliferating cell nuclear antigen (PCNA)/GFAP,BMP4/GFAP immunofluorescence double staining,and their correlation was analyzed.Results Nissl staining showed that the neurons at cerebral cortex and hippocamp were irregularly arranged and decreased in the HI group,and the number of Nissl-stained cells were significantly less than that in the CON group(tcortex =26.54,thippocamp =32.26,all P ＜0.05) ;but the Nissl-stained cells were well arranged in the HI + UCBMC group and more Nissl-stained cells were observed as compared with the HI group (tcortex =10.18,thippocamp =12.56,all P ＜ 0.05) ; Western blot showed that the expression of GFAP in the HI group was significantly higher than that in CON group(t =5.50,P ＜ 0.05) ;but the expression of GFAP in the HI + UCBMC group was significantly lower than that in the HI group (t =3.04,P ＜ 0.05) ; immunofluorescence double staining showed that there were more PCNA + GFAP + cells in the HI group compared with the CON group(t =10.39,P ＜ 0.05),but fewer PCNA + GFAP + cells were observed in the HI + UCBMC group than those in the HI group(t =3.72,P ＜ 0.05).And there were more BMP4 + cells in the HI group compared with the CON group (t =5.52,P ＜ 0.05),but fewer BMP4 + cells were observed in the HI + UCBMC group than those in the HI group(t =2.33,P ＜0.05).The fluorescence intensity of GFAP were correlated with that of BMP4 in HI + UCBMC group (r =0.84,P ＜ 0.05).Conclusions UCBMC transplantation can decrease the proliferation of the astrocytes,thus promote brain damage repair and its mechanism might be collected with the decreased expression of BMP4.

Traditional research ideas of miRNA-target gene-biological function have ignored the contact between the target genes and signaling pathways involved , making the integrity and relevance of miRNA regulatory mechanisms not be fully elucidated .Integrated with systematic and relevant way of thinking , summarization and analysis for the luciferase reporter assay validated miR-205 target genes and their related signaling pathways will pave the way for new research area for miR-205 , and , it will be helpful for breaking through the status quo and exploring the novel research areas for miRNA .

Objective:To explore the expression of mammalian target of rapamycin (mTOR)and its relationgship with the prognosis of breast cancer,and to provide evidence-based basis for the using of mTOR inhibitor in the treatment of breast cancer.Methods: A systemical literature search was conducted based on the following databases:PubMed,EMBbase,Cochrane Library,ISI Web of Science,and CNKI up to November 24,2015.The outcome measures were hazard ratio (HR)with 95% confidence interval (CI) for the association between the mTOR expression and the prognosis of patients with breast cancer.The primary end points including disease-free survival (DFS ), and overall survival (OS ). STATA 12.0 was used to conduct the statistical analysis. Results:A total of seven cohort studies,1 758 patients were included. The risk of recurrence and metastasis of the breast cancer patients with positive expression of mTOR was 2.05 times of the patients with negative expression of mTOR (HR= 2.05, 95% CI: 1.01 - 4.13,P = 0.003);the risk of death in the breast cancer patients with positive expression of mTOR was 2.63 times of the patients with negative expression of mTOR (HR = 2.63, 95%CI:1.45-4.80,P = 0.736).Conclusion:The positive expression of mTOR can significantly increase the recurrence,metastasis and death risk of the patients with breast cancer.

Objective To analyze the efficacy and tolerance of methotrexate(MTX)in remission maintenance of Crohn′s disease (CD).Methods From June 2012 to August 2015 ,49 CD patients who received MTX as mainly treatment medication to maintain remission were enrolled.The pre-medication history,efficacy,dosage and side effects of MTX were analyzed.The effects of inducing strategy on disease recurrence were analyzed.Chi-square test and t test were used for statistical analysis.Results Among the 49 patients,34 (69.4%)received steroids for remission inducing,nine (18.4%)received infliximab for remission inducing and six (12.2%)achieved remission after operation.In the 44 patients treated with azathioprine (AZA)before,the median treatment time was one month and the dosage for withdrawal of AZA was (42.0 ± 14.8)mg/d.The most common reason was leucopenia (81 .8%, 36/44).Till the time point of follow-up,46 of the 49 CD patients still took MTX orally with a median treatment time of 16 months,and the weekly dosage was (12.7 ±2.0)mg.Thirty-one cases (67.4%) achieved clinical stability,while 15 cases (32.6%)underwent clinical recurrence.The median Crohn′s disease activity index (CDAI)was 123.5 ± 66.6.The weekly dosage of clinical stability group was (12.5 ±2.1)mg,and that of clinical recurrence group was (13.0 ±1 .7 )mg,there was no statistically significant difference between the two groups (t =0.802,P =0.426 ).The recurrence rate of steroids-induced remission group was 41 .2% (14/34 ),which was higher than that of infliximab and surgery-induced remission group (1/15),and the differnce was statistically significant (χ2 =5 .177,P =0.023 ). The common side effects were gastrointestinal reaction (26.5 %, 13/49 ), impaired liver function (20.4%,10/49)and leukopenia (12.2%,6/49).Only three cases could not tolerate the side effects and underwent medication withdrawal.Conclusions As a second-line immunosuppressant for maintanence remission in CD,MTX is effective and well-tolerated in patients.So it can be an important option during the long course of CD.

Objective Exploring the antidiarrhea effect of new Ershen pills composed of nutmeg koji based on the spleen and kidney yang deficiency diarrhea mouse model.Methods KM mice were randomly divided into normal,model,Ershen pills Ⅰ(salt psoralen+bran-stewed nutmeg),Ershen pills Ⅱ(salt psoralen+nutmeg koji),Ershen pills Ⅲ(salt psoralen+nutmeg raw product),salt psoralen,and nutmeg koji groups.The combined modeling method of hydrocortisone+senna leaf was used to establish the diarrhea mouse model with spleen-kidney yang deficiency.General signs and pathological changes of each organ were observed.Various organ indexes,the small intestine propulsion rate,gastric residual rate,serum motilin(MTL),gastrin(GAS),adrenal ketone(CORT),thyroid stimulating hormone(TSH),testosterone(T),tumor necrosis factor-α(TNF-α),and interleukin 1β(IL-1β)were assessed.16S rDNA sequencing and data analysis were conducted for fecal microorganisms.Results After modeling,compared with the normal group,the weight and activity of mice in the model group were reduced,the small intestine propulsion rate was significantly increased,the gastric residual rate and organ indexes were significantly decreased,serum GAS,CORT,TSH,and T levels were significantly decreased,MTL,TNF-α,and IL-1β levels were significantly increased,and intestinal flora species diversity was decreased.After administration,the above indexes and symptoms were improved by various degrees in each administration group,and the Ershen pills Ⅱ group was better than Ershen pills Ⅰ,Ershen pills Ⅲ,salt-psoralea,and nutmeg koji groups.Conclusions Combined use of nutmeg koji and salt psoralen has a remarkable effect on diarrhea of spleen-kidney yang deficiency.Fermented nutmeg reduces its toxicity risk and enhances its effect of warming the spleen and preventing diarrhea,which facilitates the development of nutmeg koji.

Objective To explore the gender and cultural differences in emotional memory of college students and whether they have memory preferences for emotional pictures with different valence.Methods Using the learning-recognition paradigm,fifty-four Tibetan and Han students were asked to recognize the emotional face images of different valence.The reaction time and accuracy of the subjects were recorded and analyzed.Results (1) The reaction times of the Tibetan and Han subjects were (1 808.28±528.45) ms and (1 508.27±455.37)ms,the main effect of national type was significant (F(1,50)=5.826,P＜0.05).The main effect of emotional picture valence was significant (F(2,100)=6.997,P＜0.05),the reaction time of negative pictures ((1 568.90 ± 534.45) ms) was significantly shorter than that of the positive picture ((1 684.08±476.24) ms) and neural pictures ((1 738.51 ± 528.73) ms).(2) On the accuracy rate,the main effect of emotional picture valence was significant (F(2,49)=29.56,P＜0.05).The accuracy of negative images ((78.83±8.55) ％) was significantly higher than that of the positive ((73.41 ±9.66) ％) and neutral picture ((67.96 ± 9.64) ％).(3) For Tibetan subjects,the accuracy of positive picture ((77.46 ± 8.48)％) was significantly higher than that of positive ((70.89±8.83)％) and neutral pictures ((67.32± 8.70) ％),the main effect of emotional picture valence was significant (F(2.52)=14.891,P＜0.05).(4) For Han subjects,,the response time of negative images ((1 359.89±365.58) ms) was significantly shorter than that of positive ((1 549.93±434.60) ms) and neutral pictures ((1 615.01±528.77) ms),the main effect of emotional picture valence was significant (F(2,48)=9.758,P＜0.05).The accuracy of negative images ((80.31±8.53)％) was significantly higher than that of neutral ((68.65±10.70)％) and positive images ((76.12±9.94)％),and the main effect of emotional picture valence was significant (F(2,48) =15.359,P＜ 0.05).Conclusion National culture and emotional valence affect the emotional memory of the Tibetan and Han students.Both Tibetan and Han students have obvious "negative bias" on the recognition of emotional images,but they have different characteristics.